Zbrush Rock sculpting
Zbrush and Mudbox Sculpts : Texture and Shader
Rocks - Sculpting and texturing practice (images heavy) - Polycount Forum
Owl's 3d and 2d Arts! - Polycount Forum
Rawk - Post any rocks you make here! - Page 19 - Polycount Forum
Rawk - Post any rocks you make here! - Page 7 - Polycount Forum
making rocks process by *angelitoon on deviantART
Some Zbrush and Max Work - Page 30. This is the type of pillar I am going to try and create.